On November 16, 2017 the Central Bank of Brazil (Banco Central do Brasil – Bacen) issued Communiqué No. 31,379, warning about the risks of operations of custody and trading of the so-called "virtual currencies".

On November 16, 2017 the Central Bank of Brazil (Banco Central do Brasil – Bacen) issued Communiqué No. 31,379, warning about the risks of operations of custody and trading of the so-called "virtual currencies".